Anti-skid device



Dec; 24, 1929. 'r. E. MILLES ANTISKID DEVICE Fi e p l 1929 2Sheets-Sheet l TJomsZi'Wi/s INVENTOR ATTOR NEY Mull-35% Dec. 24, 1929.T, MlLLEs 1,741,065

ANTI SKID DEVICE Filed April 1, 1929 2 Sheets-Sheet 2 JZaWZQSE 77/27/68INVENTOR I WITNES%\ZXM ATTORNEY Patented Dec. 24, 1929 1,741,065

UNITED STATES PATENT OFFICE THOMAS E. MILLES, F MCKEES ROCKS,PENNSYLVANIA ANTI-SKID DEVICE Application filed April 1, 1929. erial No.351,756.

This invention relates to an anti-skid deinner ends held in the channelby rivets or vice for the wheels of vehicles, the general the like, theouter portions of the fingers or object of the invention being toprovide a lugs being tapered, with their extremities ring-shaped memberhaving fingers 0r lugs formed with teeth or roughened, as shown atthereon for engaging the road surface, as the 8. The member 5 is ofgreater radial depth wheel of the vehicle rotates to prevent skidthanthe plates with the outer parts of the ding or slipping of the wheel,with springs finge s or lugs projecting beyond the outer for normallyholding the ring member conperipheries of the plates and the channeledcentric with the wheel, with the fingers out Jart located within theopening formed by of contact with the surface and means, operthe innerperipheries of the plates. Some of ated by the driver or operator of thevehicle, the teeth or lugs are made of considerable for moving the ringmember to an eccentric width, as shown at 7, and these lugs haveposition relative to the vehicle wheel wherelarge circular openings 9therein, through by the fingers or lugs will engage the road which thebolts 4 pass which connect the ring- 15 surface as the vehicle wheelrevolves and thus shaped plates together. Springs 11 are conpreventskidding or slipping of the wheel. nected with portions of the hub ofthe wheel This invention also consists in certain other and with thechannel 6 and act to hold the features of construction and in thecombinamember 5 concentrically with the wheel, and tion and arrangementof the several parts, as said member is of less diameter than the go tobe hereinafter fully described, illustrated wheel. in this position ofthe member, the in the accompanying drawings and specifiroughened endsof the lugs are held out of cally pointed out in the appended claims.contact with the road surface, as will be seen In describing theinvention in detail, reffrom Figure 2. I erence wlll be had to theaccompanying draw- An arm 12 has its upper end pivoted to ings whereinlike characters denote like or a bracket 13 on the wheel axle orhousing, corresponding parts throughout the several and a roller 14: iscarried by the lower end views, and in which of the arm, this rollerengaging the channel Figure 1 is a view showing the inner face shapedring 6. A link 15 connects the arm of a vehicle wheel equipped with thedevice, 12 with a lever 16 pivoted to a side member 30 the view alsoshowing a part of the vehicle of the chassis and a link 17 is connectedframe and the operating means for the deto the upper end of the lever 16and is also vice. connected to an operating member so that Figure 2 is asimilar view but showing the when said member is actuated, the lever 16device in inoperative position. will be rocked and the link 15 willswing as Figure 3 is edge view of the wheel and the arm 12 downwardlyand thus cause the the device, parts being in section. roller 14 toforce the member 5 to an eccen- Figure l is a view of the ring platewhich tric position relative to the wheel so that is to be attached tothe wheel. the lugs will engage the road surface, as Figure 5 is a viewof the other ring plate. shown in Figure 1. As soon as pressure is inFigure 6 is a section through the device. released from the arm 12, thesprings 11 In the drawings, the numeral 1 indicates will return theparts to inoperative position a ring-shaped plate formed with the oflsetand thus the lugs will not contact the road ears 2 which are bolted orotherwise attached surface. to the wheel of the vehicle, and the numeralt will, of course, be understood that one 45 3 indicates anotherring-shaped plate which of these devices is placed on each rear wheel isfastened to the first plate in spaced relaof the vehicle and that thelinks 17 may be tion by the bolts 4. A ring-shaped member connected to ashaft journaled in the chassis 5 is movably positioned between theplates and connected with a foot pedal or hand 1 and 3, this membercomprising achanneled lever arranged adjacent the drivers seat so ring 6and the fingers or lugs 7 having their that when the said shaft isrocked, both devices will be moved to a position where they will engagethe road surface.

Thus I have provided simple means for preventing a vehicle fromskidding, the devices being always attached to the wheels and ready tobe moved into operative position by a movement of a foot pedal or handlever. As sQOI as the need of the anti-skid devices is removed, it issimply necessary to release the pedal or lever, when the springs willreturn the parts to inoperative position.

As the device is placed on the inside of the wheel, it is hidden fromview and, therefore, does not detract from the appearance of thevehicle.

It is thought from the foregoing description that the advantages andnovel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction andin the combination and arrangement of the several parts provided thatsuch changes fall Within the scope of the appended claims.

lVhat I claim is '1. An anti-skid. device for a vehicle wheel,comprising a ring-shaped member having lugs on its periphery, saidmember, with the lugs, being of smaller diameter than the wheel, meansfor normally holding the memher in a concentric position with respect tothe Wheel and means for lowering the member whereby the lugs will engagethe road surface as the wheel revolves.

2, An anti-skid device for a vehicle wheel, comprising a ring-shapedmember having lugs, on its outer periphery, spring means for normallyholding the member raised posi tion with its lugs out of contact withthe road surface and means for lowering the member whereby the lugs willengage the surface as the wheel revolves.

3, An anti-skid device for a vehicle wheel, comprising a pair of spacedrings, means for attaching one ring to a wheel, a ring-shaped membermovably supported between the rings and composed of a ring part and lugsattached to the outer periphery of said part, springs connecting thering part to the hub of the wheel and normally holding the ringshapedmember in a position concentric with the wheel, an arm pivoted to astationary part, a roller at the lower end of the arm and means forSwinging the arm downwardly to cause the roller to move the rin -shapedmember to an ec n i po ition relative to the wheel, whereby the lugswill engage the road surface as the Wheel revolves.

In testimony whereof I aflix my signature.

THOMAS E- MILLESt

